ISO INTERNATIONAL STANDARD 16757-2 First edition 2016-11-15 Data structures for electronic product catalogues for building services - Part 2: Geometry Structures de donnees pour catalogues électroniques de produits pour lesservicesdubatiment- Partie2:Géométrie Reference number IS0 16757-2:2016(E) ISO @ IS0 2016 IS0 16757-2:2016(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2016, Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. IsOcopyrightoffice Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 copyright@iso.org www.iso.org @ IS0 2016 - All rights reserved ards Bodies IS0 16757-2:2016(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. ..1 2 Normative references 3 Terms and definitions 4 Catalogue structure and catalogue information ..2 5 Geometry .4 5.1 Shapes. .6 5.2 Symbolic shapes .6 5.3 Spacedata .6 5.3.1 Overall space ..6 5.3.2 Minimum operation space. .7 5.3.3 Accessspace .7 5.3.4 Placement and transportation space. 7 5.3.5 Installation space .7 5.4 Surfaces .7 5.5 Ports .7 6 Methodology of geometric description .8 6.1 Principle of geometric representation .8 6.2 Level of detail .8 6.3 Surfaces 10 6.4 Ports. .12 6.5 Generation of parameter values for the geometry ..13 Geometry elements .15 7.1 CSG form primitives. .18 7.2 CSG sheet metal primitives. .18 7.3 Expanded CSG primitives ..19 7.4 Mapping of IS0 16757 geometry to parametrizable STEP and IFC geometry ..19 Annex A (normative) Additional geometry elements .23 Bibliography ..82 CopyightInteatioa Oazh rights reserved iii Not for